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- It' s hard finding time to study ( the subject ). 很难找出时间来学习（这门学问）.
- It' s hard to define exactly what has changed. 很难解释清楚到底发生了什麽变化.
- IT'S hard to fininsh this task in less than a week. 要在不到一周的时间内完成这项工作，是件困难的事情。
- It’s hard to say go out there and play a game offensively. 很难说让他们上场去打出一场美妙的进攻。
- It' s hard to readjust ( oneself ) to life in Britain after working abroad. 在国外工作之後; 很难重新适应英国的生活.
- Everything from homogeneous pure chemicals to the most heterogeneous of minerals, overing the whole spectrum of the Mol hardness scale, except maybe diamond. 什么都可以，从纯的均匀化学物质到大多数非均匀的矿物，范围覆盖整个莫氏硬度，也许只有钻石除外。
- Teacher Judy Garber says it”s hard to get the kids away from the computers. 加利福尼亚圣卡洛斯的阿让代尔小学可以说是美国最先进的在线学校。
- Eath time a new axis of tavel is used, the robot’s hard stops must be changed. 每当要用到一个新的行程路径时，自动装置必须改变硬机械。
- The twi are so much alike that it‘s hard to distinguish between them. 两个又胞胎如此相似，以至于很难区分他们。
- With the hectic pace of life these days, it’s hard to find a moment of peace. 现代生活繁忙的节奏中，要找到一个平和的时刻也是很困难的。
- Use this utility to copy DOS and NetWare drivers to your computer’s hard disk. 第二章讲述8098单片机的基本结构，包括硬件和软件的组成；第三章讲述中央处理器的基本概念；
- It' s hard to keep track of ( ie maintain contact with ) all one' s old school friends. 与中学时的所有老校友都保持联系是很困难的.
- The results might explain why it" s hard to tickle yourself, scientists said today. 而这一结论也就能对为什么人们胳肢自己时感觉不到痒的现象做出解释。
- It' s hard to choose between the two candidates : they' re both much of a muchness. 很难在这两个候选人中作选择; 他们俩不分上下.
- Mohr's hardness scale 莫尔(氏)硬度表
- HBE-3000 Electronic Brinell Hardness Tester with 10 steps testing force is able to measure hardness values with each 10 Brinell hardness scales. 电子布氏硬度计具备了10级试验力，可分别测试布氏硬度的10种标尺。
- Soon after loading VNC onto my computer, I was riffling through Joel' s hard drive. 然后，我迅速把VNC装载到我的计算机上，这样，我就可以"翻查"乔尔的硬盘了。
- SLD: It’s hard to synthesize software now.Is it possible to synthesize the interconnect? SLD: 目前很难进行软件的综合设计，将互联产品进行综合设计是否可能？
- Well it’s hard to guess how its honoree might feel about cows chewing leisurely on his visage. 至少，这幅干草作品作为对爱因斯坦的献礼堪称独特。
- You can put out a ‘scientific’ study that’s hard to understand and easy to misconstrue. 你可以把一个'科学'研究，很难理解和容易误解。
